Start the debugger, and be amazed at the fancy new way it displays your favorite objects. When you edit the file, you shouldn't have to restart all of Visual Studio - it will get re-loaded when you start the debugger.

Definitions

DisplayString:
an expression (string literal or expression) to be shown in the Watch,
QuickWatch or Command window; if the preview section is present and you
also have a AutoExpand rule for it, the AutoExpand rule is ignored.